brandy078
I have been using NextDNS with corresponding filter lists for three years now.
You can also configure RethinkDNS in a similar way without an app (NextDNS has a much nicer user interface).
All spying/tracking apps that do not stop their official work when their spying is prevented will still work with blocklists in NextDNS/RethinkDNS or similar solutions. solutions will still work.
Advantage of such DNS filter solutions without apps: no increased energy consumption on the smartphone!
Advantage of NextDNS: You can see which domains have been blocked in a browser tab (statistics).
You can therefore see how effective NextDNS is and whether and how often your app has tried to call home.
And if your app is no longer working due to blocking, you can deactivate the filter if necessary.